Key-locked slidable bolt fastening for attache cases and the like



c. w. CHENEY 2,444,247 KEY-LOCKED SLIDABLE BOLT FASTENING FOR ATTACHECASES AND THE LIKE June 29, 1948.

Filed Oct. 10, 1946 CHARLES \N l h om HNEY \NvE va -rem K;- ATT y.

Patented June 29, 1948 KEY-pooKeifsLiriABLE son srasn smo"'FORATTACHE'EASES AND TnE 'LIKm Charles-William Cheney; HocklygBirmingham; England i Applicationiootober 10, 1946;seriai'isroif'mzjsrt1 liroreat Britain Marchfi, 4944- Theinventionrelates-to a key loekedslidable bolt-*fastening member; for an attach case or the'like;"ofthe-kind having *abackplate of'shal low oblong form tocontain" aislidable bolt whichis also ofshallow "oblong form andcontains a" keyoperated tumbler and-a -key-operated look? ing plate: thebaek platand'the'boltbeing closed by a front plate which -is providedmmits 'facewith a slidable knob connected through the from:

plate to the bolt" to handmovesaid-bolt against spring" pressure? The"other fastening member isahi-nged hasp having a rigid back ldo'p adaptedto -pass-"through"an" opening"in thefront; plate to" be engaged *byfthenose' end oftheibolt? In a slidable bo'ltfasteningj-membenof" theaforesaid kind the invention' provi'des for the keyoperated tumbler-4and .the key-operated locking member to be mounted about the'same rigidpeg of the back plate proiectingthrough a longitudinal slot in the bolt,and which slot i according to the invention, is---pr0vi-ded with n-sidenotch to be engaged by a rigid stump of the lockingplate to hold thebolt from 'being withdrawni The locking plat-a ise revohiblone only;upon' the peg and bp positeiy tothestump is "formed" with a gap toprovide two distanced lugs between which the bit of the key operates forrocking said locking plate. The tumlbler is a fiat and slotted plate andis formed with a forward V edge and with a rear curved edge, and it isarranged to both slide and revolve upon the peg of the back plate, whilethe stump of the looking plate passes freely through the slotting of thetumbler.

A wire spring, comprising two arms and a coupling coil, is mounted on astud of the bolt for its one arm to operate against an end of the boltand its other arm against the forward V edge of the tumbler, this springbeing common to bolt, tumbler, and locking plate. The tumbler liesagainst the inner face of the bolt, and the one arm of the spring liesalso against this face and against the V edge of the tumbler, andextending underneath a short arm of the locking plate, which at its endsabuts against the inner face of the bolt and is ofiset between its endsto accommodate the fiat-plate tumbler.

The invention will be clearly understood by the description hereinafterappearing with reference to the accompanying drawings.

Fig. 1 is a front elevation of the slidable-bolt fastening member.

Fig. 2 is an elevation similar to Fig. 1, but with the front plateremoved.

3 ZCl'aims; (01. 70467) The b ac k platem, ee shanow oblong-tea ime lflah is pl o-vide'd with a rigiu peg aaatandnrgus ter. which is 'd-fimam-a1 enstructiom:

right at aboutits middle to testuarine pox form at other parts ot'saidback-plate such as a l an'd a5 being well known forconnectiontneretooothe ont late or the iastening-niene The slidable iboltfs'hallb'w oblong box format dz and I of'the peg endoi wan oles' d'ltotem a: vvith-members=o e slidable knob ef and with spring f.

A locking plate g has a hole 92 through it to pivot it upon the peg a3of the back plate, and to the one side of said hole a rigid stump g3turned inwardly at right angles, while to the other side of said hole92, and oppositely substantially to the stump, is gap g4 providing twodistanced lugs g5 g6 between which the bit of the key operates forrocking the locking plate; while further said locking-plate has,adjacent the stump g3 a projection g1 under which the one branch of thespring engages to assist in holding the spring in position within theslidable bolt d. It will be clear from Fig. 6 that the middle-part ofthe locking plate is ofiset at g8, to accommodate a tumbler h.

The tumbler his flat-plate-like, is slotted at 71.2, and is formed witha forward V edge at 723, and at M with a rear and outardly curved edge,the forward portion of the slotting to accommodate the stump 93 of thelocking-plate g, and the rear portion to accommodate the rigid peg a3 onthe back-plate.

It is therefore obvious that the tumbler It lies against the innersurface of the slida'ble bolt, as also do the ends of the locking-plateat each side of the offset, and that both tumbler and plate engage thatpart of the peg a3 extending above the slotting, so that the bit of thekey can operate upon both tumbler and locking plate, the

3 former revolving and sliding about the peg, and the latter revolvingonly about said peg.

The front plate c has the usual opening 02 across which the bolt nose d2extends, and the knob e, having a suitable key-hole e2 through it, isconnected to the bolt at the riveting points (27, so that when the boltis unlocked the sliding of the knob e effects the withdrawal of the boltagainst the operation of the spring 1.

The material parts described and illustrated are relatively arrangedwith the bolt (1 engaging the box formation of the back-plate and thepeg 13 of the latter engaging the slot d4 of the bolt. The tumbler ispositioned within the bolt so that the peg a3 engages the rear portionof the slot hi, and the locking-plate is applied over the tumbler withits hole 2 engaging the peg a3 and its stump g3 engaging the forwardportion 6f the slot 112 of the tumbler; the arrangement being that inthe locked positioning of the fastening the stump 93 engages the sidenotch d in the slot d4 of the bolt, the stump g3 constantly engagingslot of the tumbler.

The action is as follows: in locking the bit of the key operatesthecurved rear edge m1 of the tumbler to slide the latter forward a shortdistance against spring action operating against the V edge h3, and thenimmediately picks up the locking-plate g to rock same together with thetumblerso that the stump of the locking plate, which projects throughthe slotting, engages the notch (15 of the bolt. In unlocking, thetumbler is first moved to slide it slightly, and afterwards thelocking-plate is rocked together with the tumbler to again bring backthe stump g3 of the locking plate into the straight part d4 of the slotin the bolt, when the latter is free to be drawn back against the actionof the spring f.

The principal features in the construction and arrangement hereinbeforedescribed is that both tumbler and locking plate are mounted upon thesame peg of the back plate, the former to slide and revolve, and thelatter to revolve only, and that there is a silent wipe-over springaction in locking and unlocking in consequence of a straight limb 4 ofthe spring f'operating against the V edge 712 of the tumbler and againstone face only of the V, although the action of locking and unlocking canbe felt from the key action.

What I claim is:

1. 'A fastenings member of the kind described, wherein both tumbler andlocking-plate are mounted about the same rigid peg of the back plate,the tumbler to slide and rock about said peg, and the plate to rock onlyabout said peg, said plate having a locking stump to engage,permanently, the slotting of the tumbler and also adapted to engage abolt-locking notch at the one side of a longitudinal slot in the bolt,said bolt, tumbler, and locking plate being suitably spring loaded.

2. A fastenings member of the kind described, wherein both numbler andlocking-plate are mounted about the same rigid peg of the back plate,the tumbler to slide and rock about said peg, and the plate to rock onlyabout said peg, said plate having a locking stump to engage,permanently, the slotting of the tumbler and also adapted to engage abolt-locking notch at the oneside of a longitudinal slot in the bolt,said bolt, tumbler and locking plate being spring loaded by a doublearmed spring operating between one end of the bolt and an edge of thetumbler.

3. A fastenings member in accordance with the preceding claim, andwherein the tumbler is formed with a forward V edge, and a double armedand coil-coupled wire spring operates between thesone end of the boltand the V edge of the tumbler in manner described.

CHARLES WILLIAM CHENEY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,545,398 Cheney July '7, 19252,307,940 Messina Jan. 12, 1943

